GL Communications - Echo Canceller Testing Application Notes

Testing EC functions on VoIP Gateways
Diagram for testing EC functions on VoIP gateways
Echo & Propagation Delay Measurement System for Wireless and Landline Circuits
This application note will describe how to measure delays through wireless and wireline networks using standard test equipment from GL Communications.
Measuring Delay and Loss Over Circuit and Packet (VoIP) Networks
This application note will describe how to measure delays and losses through circuit and packet networks using standard test equipment from one manufacturer.

Download GL's Echo Canceller Training Document in Adobe Acrobat (PDF) Format
Echo Canceller Training Document (PDF) May 20, 2000 - Slides and screen shots on how to test echo canceller using GUI application. Both subjective and objective test scenarios and presented

Echo Canceller Testing Using GL's Ultra T1/E1 and Super T1/E1 Cards and Laptop T1/E1 Units
This paper introduces the theory of echo cancellation, echo canceller test requirements per G.168, and the features and capabilities of GL's products to perform comprehensive echo canceller testing. GL's Scripted Control Program is used to demonstrate different test configurations.

Echo Canceller Test Configurations Using GL Products
This brief note describes the various test configurations for echo canceller testing using GL's T1 and E1 hardware, using the Script Program.

Download the Document: An Architecture for Multi-Channel Echo Canceller Testing per G.168 Requirements in Adobe Acrobat (PDF) Format
Paper presented at EC standards body meeting.

Download The G.168 Echo Canceller Test Suite Document in Adobe Acrobat (PDF) Format
Step by step procedures for G.168 testing

How to Test An Echo Canceller with Analog Interfaces
Diagram for setup and testing of an EC with analog interface.

How to Insert Echo Onto a Live Connection
Diagram for inserting Echo onto a live connection.

Alternative method of testing an Analog EC - please view all links
- Functional view
- Cabling View
- Script for execution

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